KR20170082338A - Stereoscopic image display apparatus based on hologram - Google Patents

Stereoscopic image display apparatus based on hologram Download PDF

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Publication number
KR20170082338A
KR20170082338A KR1020160001604A KR20160001604A KR20170082338A KR 20170082338 A KR20170082338 A KR 20170082338A KR 1020160001604 A KR1020160001604 A KR 1020160001604A KR 20160001604 A KR20160001604 A KR 20160001604A KR 20170082338 A KR20170082338 A KR 20170082338A
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South Korea
Prior art keywords
hologram
pattern
light
image
display
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KR1020160001604A
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Korean (ko)
Inventor
서영운
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(주)젬백스테크놀러지
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Priority to KR1020160001604A priority Critical patent/KR20170082338A/en
Publication of KR20170082338A publication Critical patent/KR20170082338A/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/0443—Digital holography, i.e. recording holograms with digital recording means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G03H1/268—Holographic stereogram
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202—Reconstruction geometries or arrangements
    • G03H1/2205—Reconstruction geometries or arrangements using downstream optical component
    • G03H2001/2213—Diffusing screen revealing the real holobject, e.g. container filed with gel to reveal the 3D holobject
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2270/00—Substrate bearing the hologram
    • G03H2270/30—Nature
    • G03H2270/32—Transparent

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Holo Graphy (AREA)

Abstract

The present invention relates to a hologram-based stereoscopic image display device capable of generating more realistic stereoscopic images and further capable of being converted into illumination devices having illumination and interior functions.
A hologram-based stereoscopic image display apparatus according to the present invention includes: a bottom portion provided in a lower region; A display unit arranged on the upper region so as to face the bottom surface portion and projecting the first image onto the transparent screen; A transparent screen disposed on the bottom portion and having a plurality of side panels formed in a polygonal pyramid or pyramid shape to generate a hologram of the first image in an inner space; A light emitting element disposed on a periphery of the bottom portion and emitting light in an upward direction; And a mirror disposed on the upper region to reflect light incident from the light emitting device and direct the light to the transparent screen.

Description

TECHNICAL FIELD [0001] The present invention relates to a stereoscopic image display device,

The present invention relates to a display device, and more particularly, to a hologram-based stereoscopic image display device capable of generating a more realistic stereoscopic image and further capable of being converted into an illumination device having illumination and interior functions.

With the development of information communication technology and display technology, the demand for a more realistic image such as three-dimensional stereoscopic image is increasing, and the demand for a device for displaying stereoscopic image will increase drastically. A variety of stereoscopic imaging techniques have been proposed to meet these demands, and techniques using virtual reality and stereoscopic imaging using holography techniques are available.

A technique using virtual reality is a method in which a user wears a goggle type device and views a virtual image using computer graphics. However, this method has a disadvantage in that the user must wear a separate device for viewing a virtual image, and thus the user can not conveniently use the device.

Another method is to embody a holographic image in a space using a holography technique. The hologram is made by recording the reference light in the recording medium and the reflected light from the object to record the information, that is, the object light, and recording the interference pattern of the reference light and the object light.

Since Dennis Garbor first invented the hologram, the most common methods to date have been the two beam transmission holograms developed by E and Leith and the one-beam holograms developed by Denisyuk reflection hologram, and Edge-lit hologram developed by N. Phillips et al.

The transmissive hologram allows the reference light and the object light to be incident on the recording medium in the same direction during recording and allows the reference light to transmit through the hologram recorded in the recording medium so that the hologram is reproduced in the direction opposite to the reference light.

The reflection type hologram causes reference light and object light to enter the recording medium in a direction opposite to the recording medium during recording, and the reference light reflects the hologram at the time of reproduction so that the hologram is reproduced in the same direction as the reference light.

In order to reproduce a conventional hologram, there are many technical problems. Recently, a technique has been proposed in which a viewer reflects an image using a reflective film so that the viewer can recognize the hologram as a three-dimensional image.

However, since the hologram of this type can only observe the stereoscopic image of the size of the produced hologram, the size of the hologram must be made large in order to observe a large stereoscopic image. Therefore, there is a disadvantage that the size of the stereoscopic image that can be observed in proportion to the size of the hologram is limited.

On the other hand, the floating type hologram reproducing device must be provided with a transparent screen having a pyramidal structure. In this case, the transparent screen is shaded to reduce the visibility or sharpness of the hologram generated in the transparent screen.

In addition, since the conventional stereoscopic image display device functions only as a display device, if the stereoscopic image display device can be used for other purposes, its use value can be further increased.

Prior Patent 1. Korean Patent Publication No. 1997-7007467 (Published on December 01, 1997)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hologram-based stereoscopic image display device capable of generating a deeper and more realistic stereoscopic image than a stereoscopic effect realized by a conventional hologram itself will be.

It is still another object of the present invention to provide a hologram-based stereoscopic image display device capable of exclusively using a display device as an indoor lighting device, further reproducing holograms in an indoor illumination, and realizing an excellent interior effect.

It is still another object of the present invention to provide a hologram-based stereoscopic image display device capable of preventing shading from occurring on a transparent screen.

According to an aspect of the present invention, there is provided a hologram-based stereoscopic image display device including: a bottom portion provided in a lower region; A display unit arranged on the upper region so as to face the bottom surface portion and projecting the first image onto the transparent screen; A transparent screen disposed on the bottom portion and having a plurality of side panels formed in a polygonal pyramid or pyramid shape to generate a hologram of the first image in an inner space; A light emitting element disposed on a periphery of the bottom portion and emitting light in an upward direction; And a mirror disposed on the upper region to reflect light incident from the light emitting device and direct the light to the transparent screen.

The light emitting element is configured to display a predetermined pattern, a character, a pattern or a pattern (hereinafter, referred to as a "pattern"), and the pattern is expressed as N × n (n≥ 1) are arranged in the same number in the positions corresponding to the respective side panels.

The mirror may be arranged vertically above the respective patterns so as to reflect the incident light representing the pattern to the plurality of side panels.

The stereoscopic image display device according to the present invention has a first function for illuminating the outside of the display device with the light of the light emitting element and a second function for illuminating the outside of the display device, And to realize the function.

According to the hologram-based stereoscopic image display apparatus of the present invention, a viewer can appreciate stereoscopic images more realistic than conventional hologram images.

Particularly, when the display device of the present invention is applied to a showcase, a showroom or the like, the observer can appreciate a deeper stereoscopic image in which the hologram of the first image and the hologram of the illuminating light are combined, There is an advantage to be able to do.

In addition, when the display device is used as an external lighting device, the display device can be used as a lighting device, and a light emitting element illumination light (for example, a 'candle' pattern) is displayed in the form of a hologram inside the transparent screen. It is possible to implement the interior function together, thereby maximizing the aesthetic sense.

In addition, it is possible to remove the shadow generated in the transparent screen, thereby improving the visibility and sharpness of the hologram.

1 is a perspective view of a hologram-based stereoscopic image display device according to the present invention.
BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a hologram-based stereoscopic image display apparatus and a hologram-based stereoscopic image display apparatus.
3 is a front view of a hologram-based stereoscopic image display device according to the present invention.
4 is a plan view showing a display unit and a mirror of a hologram-based stereoscopic image display apparatus according to the present invention.
5 (a) and 5 (b) are schematic views for explaining the installation structure of the side panels constituting the transparent screen according to the present invention.
6 is an example of a pattern light emitted from the light emitting device according to the present invention.
7 is an example of a stereoscopic image in which a first image of a hologram-based stereoscopic image display apparatus according to the present invention is combined with a hologram of a pattern light.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, in the present specification, the term " above or above "means to be located above or below the object portion, and does not necessarily mean that the object is located on the upper side with respect to the gravitational direction. It will also be understood that when a section of an area, plate, or the like is referred to as being "above or above another section ", this applies not only to the case where the other section is " And the like.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Also, in this specification, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Hereinafter, preferred embodiments, advantages and features of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a hologram-based stereoscopic image display apparatus according to the present invention. 1, a hologram-based stereoscopic image display apparatus according to the present invention includes a body 40, a bottom surface 30, a display unit 10, a transparent screen 20, a light emitting device 50, and a mirror 70 ). According to these configurations, a plurality of functions, that is, an external illumination function, an interior function, a stereoscopic image generation function, and a shading function can be realized.

The body 40 of the present invention is a structure for supporting or fixing the bottom part 30 and the light emitting element 50. The bottom part 30 is provided on the upper part of the body 40, A light emitting element 50 is provided on the bottom surface 30 to be supported.

The bottom surface portion 30 of the present invention is a structure for supporting a transparent screen 20 thereon and serving as a stage function of a hologram produced by the transparent screen 20. It is preferable that at least the upper surface, The surface to be installed is composed of a flat surface.

5 (a) and 5 (b) are schematic views for explaining the installation structure of the side panels constituting the transparent screen according to the present invention. 1 and 5, the transparent screen 20 of the present invention includes a plurality of side panels 20a, 20b, 20c and 20d, a plurality of side panels 20a, 20b, 20c and 20d, Is configured to have a polygonal pyramid or truncated pyramid shape.

For reference, the 'truncated pyramid shape' refers to a shape in which an upper end region of a triangular pyramid or a quadrangular pyramid (that is, the apex region of the pyramid is cut parallel to the bottom face portion 30).

The transparent screen 20 is disposed on the bottom surface 30, and after the image output from the display unit 10 provided on the transparent screen 20 is projected, the transparent screen 20 is reflected and synthesized by the observer to display the hologram.

According to a preferred embodiment, the side panels 20a, 20b, 20c and 20d of the transparent screen 20 can be formed of a thin and transparent plate-shaped synthetic resin panel, a half mirror, a spim mirror, a thin transparent foil or a transparent film .

According to a preferred embodiment, when the side panels 20a, 20b, 20c, and 20d of the transparent screen 20 are formed in a polygonal pyramid shape, they may be formed into a triangular pyramid or a quadrangular pyramid shape. The truncated shape (that is, the triangular pyramid) or the upper region of the quadrangular pyramid can be formed as a cut shape (i.e., quadrilateral pyramid).

According to a preferred embodiment, each side panel 20a, 20b, 20c, 20d of the transparent screen 20 is configured to form a 45 [deg.] Angle with respect to the bottom surface 30. [ For example, if the transparent screen 20 is formed in the shape of a quadrangular pyramid or quadrangular pyramid having four side panels 20a, 20b, 20c, and 20d, the first side panel 20a and the second side panel 20b, The second side panel 20c opposing the second side panel 20c is configured such that the angle? 2 and the angle? 1 with respect to the bottom surface portion 30 are respectively at an angle of 45 ° and the third side panel 20c and the opposed fourth side panel 20d are configured such that the angle of inclination? 4,? 3 with respect to the bottom surface portion 30 forms an angle of 45 ° with respect to the bottom surface portion 30, respectively.

The inner space (hereinafter referred to as a 'hologram space') of a polygonal pyramid or truncated pyramid formed by the side panels 20a, 20b, 20c, and 20d of the transparent screen 20 corresponds to a region in which a hologram image is displayed. The image is not directly implemented in the hologram space. After the projection image is projected on the transparent screen 20, it is reflected to the observer so that the observer can see the image floating in the air (i.e., the holographic space). For reference, a hologram image implemented in this manner is generally referred to as a 'floating hologram'.

On the other hand, the hologram generated by the transparent screen 20 may be a two-dimensional plane image or a three-dimensional stereoscopic image.

The display unit 10 of the present invention is installed in parallel to the bottom surface 30 in the vertically upper area of the body 40. The display unit 10 outputs an image (hereinafter, referred to as 'first image') to be implemented in an inner space (hereinafter referred to as 'hologram space') of the transparent screen 20 and projects the image to the transparent screen 20, The hologram implemented to be viewed by an observer is an image reflected by the observer after the first image is projected on the transparent screen 20.

The images projected from the display unit 10 are divided into images corresponding to the number of side surfaces of the transparent screen 20. More specifically, the image projected on the transparent screen 20 is divided into a plurality of portions at positions corresponding to the respective side surfaces 20a, 20b, 20c, and 20d and then divided into corresponding side surfaces 20a, 20b, 20c, and 20d When it is projected, it is synthesized as one image and it is expressed as a floating hologram.

According to a preferred embodiment, the display unit 10 may be a flat panel display panel such as a liquid crystal display panel, an organic light emitting diode panel, a plasma display panel, and an LED panel.

Meanwhile, the display unit 10 can be configured to be disposed vertically above the body 40 by the support stand 60. [ 1, the upper end of the support frame 60 is connected to the display unit 10, and the lower end of the support frame 60 is connected to the body 40 so that the display unit 10 is connected to the body 40, (30).

2 is a plan view showing a transparent screen and a light emitting device provided on a bottom surface of a hologram-based stereoscopic image display device according to the present invention.

1 and 2, the light emitting device 50 of the present invention is configured to emit light in an upward direction (that is, in a direction in which the display portion 10 is installed) disposed on the body 40, May be composed of a plurality of light emitting diode elements (LEDs).

In this case, the light emitting device 50 may be configured such that each light emitting diode device is formed integrally with the body 40 or the bottom surface 30, or may be formed by a separate strip member 51, And the strip member 51 to the substrate may be arranged and fixed on the body 40 or the bottom surface portion 30.

1 and 2, the light emitting device 50 is mounted on a separate strip member 51, and the light emitting device 50 is mounted on the bottom surface portion 30.

The light emitted from the light emitting element 50 is configured to display a predetermined pattern, a character, a pattern or a pattern (hereinafter, referred to as a "pattern"), Are arranged in a plurality of numbers of 'Nxn' (natural number of n > = 1) with respect to the number of panels N, and are arranged in the same number at the positions corresponding to the respective side panels.

Therefore, if the number of the side panels is four, the pattern displayed by the light emitting element 50 may be composed of four, eight, twelve, ..., or Nxn '.

If the transparent screen 20 is formed of a quadrangular pyramid or quadrangular pyramid having four side panels and the number of the patterns is eight, the position corresponding to each side panel, that is, the front side of the side panel And the same number of patterns (i.e., two patterns) are arranged in the lower area.

Further, when constructing the 'N × n' patterns, the 'N × n' patterns may be formed of the same pattern or may have the same pattern in units of 'N', so that the position corresponding to each side panel Each of the patterns constituting the 'N' units are arranged one by one.

For example, when the number of the side panels is four and eight patterns are formed in total, if the first pattern is composed of '☆' and the second pattern is composed of '♤', the first pattern '☆' N 'units, that is, four, and the second pattern' ♤ 'is also composed of N units, that is, four.

In addition, the first patterns '*' constituting the 'N' units are arranged at positions corresponding to the respective side panels, and the second pattern '♤' constituting another 'N' And one at a position corresponding to the side panel.

This is because the first function that the emitted light by the light emitting element 50 illuminates the outside of the display device and the second function that the hologram of the specific pattern displayed by the outgoing light can be generated in the inner space of the transparent screen 20 2 function at the same time. Details of this will be described later.

6 is an example of the pattern light emitted from the light emitting device according to the present invention. In the case of Fig. 6 embodiment, the light emitting element 50 is configured to display a predetermined pattern ("???"), And each pattern P1, P2, Respectively.

The light emitting element 50 is formed so that the pattern of "??? "Is formed on each side panel with reference to the center C1 of the transparent panel 20 (50a, 50b, 50c, and 50d) of "□ Δ ○ ○" divided in the corresponding four directions, respectively. Here, the center C1 means a position corresponding to a vertex of the polygonal pyramid or truncated pyramid of the transparent screen 20. Here, the center point refers to a position corresponding to a vertex of a polygonal pyramid or a truncated pyramid of the transparent screen 20.

In this case, four '?' S, which are the first patterns P1 constituting 'N' units, are arranged one by one at positions corresponding to the respective side panels, and the second patterns constituting another 'N' (P3), which constitute another 'N' unit, are also arranged at the positions corresponding to the respective side panels, and four ' And one at each corresponding position.

The light emitting element 50 is arranged so that the emitted light representing the pattern is directed to the reflecting surface of the mirror 70, which will be described later.

FIG. 3 is a front view of a hologram-based stereoscopic image display device according to the present invention, in which the patterned light is reflected on a mirror and then projected onto a transparent screen. 4 is a plan view showing a display unit and a mirror of the hologram-based stereoscopic image display apparatus according to the present invention.

The mirror 70 of the present invention is disposed in the upper area of the display device (that is, the upper vertical area of the body 40) and reflects light incident from the light emitting element 50 to be directed to the transparent screen 20 do.

Specifically, the mirror 70 is arranged vertically above the pattern displayed by the light emitting element 50, and is configured to reflect the incident light corresponding to the pattern to the side panel. Therefore, the mirror 70 is provided by the number of side panels N of the transparent screen 20.

In the meantime, the light emitting device 50 of the present invention is configured to display a plurality of patterns. The mirror 70 is disposed at a position corresponding to each of the plurality of patterns, and reflects the incident light, So that the light of the pattern can be projected onto the corresponding side panel.

In the embodiment of FIG. 4, the number N of the side panels is four, the mirror 70 is also composed of four, and the four mirrors 70 are arranged in the order of four One in the upper area in front of each side panel.

More specifically, the mirror 70 is arranged in an area outside the display area of the display part 10 among the upper areas on the front side of the respective side panels, and the mirror 70 thus arranged is larger than 90 degrees and 180 1, and the reflecting surface is inclined at the angle? 1 with respect to the display area, and at the same time, the reflecting surface is opposed to the side panel of the transparent screen 20.

4 and 6, the first mirror 70a of the four mirrors is opposed to the first side panel, and the first light emitting device 50a is disposed vertically below the first mirror 70a The second mirror 70b faces the second side panel and the second light emitting device 50b is disposed vertically below the second mirror 70b and the third mirror 70c is disposed on the third side panel And the fourth mirror 70d is opposed to the fourth side panel and the fourth mirror 70d is disposed in the vertical lower portion of the fourth mirror 70d And the fourth light emitting element 50d are arranged.

In the above description, a plurality of mirrors 70 are separately arranged by the number N of side panels (i.e., the first to fourth mirrors), but the incident light representing the pattern may be divided into a plurality of side panels It is needless to say that the plurality of mirrors 70 may be configured to be integrally continuous. For example, the mirror 70 may be formed continuously and integrally along the outer region of the periphery of the display unit 10, so that the entire shape of the mirror 70 may have a '?' Shape.

By the combination of the light emitting element 50 and the mirror 70 as described above, the three-dimensional image display apparatus of the present invention can simultaneously realize the following first function and second function.

Specifically, when the light emitting element 50 emits light of a specific pattern (hereinafter referred to as "pattern light") divided by the number of the side panels, that is, divided into four directions, the perimeter of the display device That is, the first function.

Then, the pattern light emitted as described above is reflected toward the mirror 70, reflected on each side panel, and then reflected and synthesized to the observer so that the image displayed by the pattern light appears to the observer to float in the holographic space , And finally a second function of generating the hologram of the pattern inside the transparent screen 20 is realized.

For reference, according to the configuration of the light-emitting elements 50a to 50d of the embodiment of FIG. 6, an image displayed by the illumination light of the light-emitting element, that is, a hologram of "?

Therefore, when the user wants to use the stereoscopic image display apparatus of the present invention for lighting purposes, that is, when the display unit 10 is turned off and only the light emitting element 50 is turned on, 3) is formed on the transparent screen 20 and the pattern light of the light emitting element (for example, candle pattern light, 'L1' in FIG. 3) is reflected by the mirror 70 by the mirror 70 (For example, the 'candle hologram K1' in FIG. 3), it is possible to realize an excellent interior effect in addition to the external illumination effect.

In the case of the second function described above, the following technical synergistic effect can be exhibited in combination with the first image hologram generating function by the display unit 10. That is, by combining sub-images (i.e., a patterned optical hologram, which is another hologram) in a state in which the main image (i.e., the hologram of the first image) is displayed inside the transparent screen 20, A stereoscopic image can be generated.

For example, assume that the stereoscopic image display device of the present invention is used in a smartphone showcase or a showroom. It is assumed that the first image outputted by the display unit 10 is a smartphone and the pattern light emitted by the light emitting element 50 is the name ("GemVax") of the smartphone manufacturer.

In the above case, the stereoscopic image display apparatus of the present invention is a stereoscopic image display apparatus in which a hologram S1 representing a smartphone image and a hologram H1 representing a manufacturer name ("GemVax") are displayed at three- .

As a result, the observer perceives the hologram H1 of the pattern light as a three-dimensional background located at a distance behind or in front of the hologram S1 of the first image. As a result, the hologram S1 of the first image, One stereoscopic image composed of the hologram H1 of light can be appreciated, thereby maximizing the display and advertisement effect of the product.

Hereinafter, another function implemented by the above-described mirror 70 (hereinafter referred to as a "third function") will be described.

In the stereoscopic image display apparatus of the present invention, a hologram is generated inside the transparent screen 20. At this time, a shadow may occur in the transparent screen 20 due to a surrounding situation, and such a shadow is displayed inside the transparent screen 20 The visibility and sharpness of the hologram can be reduced.

The third function of the present invention refers to a function of preventing the shadow of the transparent screen 20 from being generated through the combination of the mirror 70 and the display unit 10.

In this case, the display unit 10 is divided into a first display region (FIG. 4, D1) in which the display region outputs the first image and a second display region (FIG. 4, D2) that outputs the illumination image.

The first display area D1 is an area for outputting an image for generating a hologram, that is, a first image. The first image output from the first display area D1 is projected onto the transparent screen 20, .

The second display area D2 refers to a border area of the entire display area D of the display unit 10 as a structure for realizing the third function.

More specifically, the second display area D2 is provided outside the rim of the first display area D1, and the rim area, that is, the second display area D2 is configured to output a single color image in particular, The single color image is preferably composed of a white image.

The mirror 70 of the present invention is configured to reflect the white image output from the second display area D2 of the display unit 10 to the mirror 70 side toward the transparent screen 20 .

With the above arrangement, the white image output from the second display area D2 illuminates the transparent screen 20, thereby removing the shade generated in the transparent screen 20, The sharpness can be improved.

While the preferred embodiments of the present invention have been described and illustrated above using specific terms, such terms are used only for the purpose of clarifying the invention, and it is to be understood that the embodiment It will be obvious that various changes and modifications can be made without departing from the spirit and scope of the invention.

For example, although the bottom part 30 and the body 40 have been described and illustrated separately, the upper surface of the body 40 may correspond to the bottom part 30.

Such modified embodiments should not be understood individually from the spirit and scope of the present invention, but should be regarded as being within the scope of the claims of the present invention.

10: Display section 20: Transparent screen
30: bottom part 40: body
50: light emitting element 60:
70: Mirror

Claims (8)

As a display device,
A bottom portion provided in the lower region; A display unit disposed on the upper region so as to face the bottom portion and projecting the first image onto the transparent screen; The transparent screen being disposed on the bottom surface portion and having a plurality of side panels formed in a polygonal pyramid or pyramid shape to generate a hologram of the first image in an inner space; A light emitting element disposed on a periphery of the bottom portion and emitting light in an upward direction; And a mirror disposed on the upper region to reflect light incident from the light emitting device and direct the light to the transparent screen,
The light-
Wherein the pattern is configured to display a predetermined pattern, a character, a pattern or a pattern (hereinafter, referred to as a 'pattern'), and the pattern includes a plurality of 'N x n' And are arranged in the same number in the positions corresponding to the respective side panels,
The mirror may further comprise:
A plurality of side panels disposed on the upper side of each of the patterns to reflect the incident light to the plurality of side panels,
The display device includes:
A first function of illuminating the outside of the display device with the light of the light emitting element and a second function of generating the hologram of the pattern in the inner space of the transparent screen, Display device.
The method according to claim 1,
Wherein the mirror is provided outside the display area of the display unit,
Wherein the reflecting surface of the mirror is arranged to be inclined at a predetermined angle with respect to the display area, the reflecting surface is opposed to the side panel,
Wherein the light emitting element is configured such that light representing the pattern is incident on the reflective surface.
The method according to claim 1,
The 'N × n' patterns may be composed of the same pattern or may have the same pattern in units of 'N', and a pattern constituting the 'N' unit may be arranged at a position corresponding to each of the side panels And each of the plurality of pixels is disposed one by one.
The method of claim 3,
Wherein the plurality of patterns are positioned in a lower region in front of each of the side panels.
The method according to claim 1,
Wherein the display region of the display unit is divided into a first display region for outputting the first image and a second display region for outputting an image for illumination,
Wherein the second display area is provided outside the rim of the first display area and is configured to output a single color image, and the single color image output from the second display area is reflected by the mirror to illuminate the transparent screen Wherein the hologram-based three-dimensional image display apparatus comprises:
6. The method of claim 5,
Wherein the single color image is a white image.
The method according to claim 1,
Wherein the display device is configured to display a stereoscopic image in an inner space of the transparent screen by combining the hologram of the pattern with the hologram of the first image.
The method according to claim 1,
Wherein the light emitting device is a light emitting diode (LED) device.










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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190080590A (en) * 2017-12-28 2019-07-08 주식회사 케이티 Three-dimensional image projection apparatus
KR20200000631A (en) * 2018-06-25 2020-01-03 권정열 Holographic display device
KR20200038131A (en) * 2018-10-02 2020-04-10 주식회사 케이티 Apparatus for projecting three-dimensional image
KR102437155B1 (en) * 2021-09-17 2022-08-26 (주)자이닉스 Realistic Real-Time Learning System Using Hologram Display Device And Method Thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190080590A (en) * 2017-12-28 2019-07-08 주식회사 케이티 Three-dimensional image projection apparatus
KR20200000631A (en) * 2018-06-25 2020-01-03 권정열 Holographic display device
KR20200038131A (en) * 2018-10-02 2020-04-10 주식회사 케이티 Apparatus for projecting three-dimensional image
KR102437155B1 (en) * 2021-09-17 2022-08-26 (주)자이닉스 Realistic Real-Time Learning System Using Hologram Display Device And Method Thereof
KR102490449B1 (en) * 2021-09-17 2023-01-19 (주)자이닉스 Realistic Real-Time Learning System Using Hologram Display Device And Method Thereof
KR102490450B1 (en) * 2021-09-17 2023-01-19 (주)자이닉스 Realistic Real-Time Learning System Using Hologram Display Device And Method Thereof

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